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Organic LED display and its brightening driving method

A light-emitting diode and display technology, which is applied in cathode ray tube indicators, static indicators, electroluminescent light sources, etc., can solve problems such as display brightness and chromaticity deviation

Active Publication Date: 2011-11-30
CHI MEI EL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the display screen of the organic light-emitting diode display will have deviations in display brightness and chromaticity due to the drop in the decay speed of the organic light-emitting diodes.

Method used

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  • Organic LED display and its brightening driving method
  • Organic LED display and its brightening driving method
  • Organic LED display and its brightening driving method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0032] Please refer to figure 1 , which shows a partial circuit diagram of the OLED display according to the first embodiment of the present invention. The OLED display has a brightness enhancement device 102 , a data line driving integrated circuit 104 , an OLED pixel unit 106 and a control device 108 . Wherein, the OLED pixel unit 106 is, for example, a pixel structure including a red OLED (not shown), a green OLED (not shown) and a blue OLED (not shown). In this embodiment, the operation mode of the brightness enhancement device 102 through the Data Line Driver Integrated Circuit (Data Line Driver Integrated Circuit) 104 and the red OLED is taken as an example for illustration.

[0033] The control device 108 is used for outputting driving signals ST1 and ST2 and control signals SC1 and SC2 . In the technology disclosed in this embodiment, when the control signals SC1 and SC2 are pulse width modulated (PulseWidth Modulated, PWM) electrical signals, a better effect can be ...

no. 2 example

[0049] Please refer to Figure 4 , which shows figure 1 Another timing diagram of the relevant signals in . The difference between this embodiment and the first embodiment is that the enabling time of the control signals SC1 ″ and SC2 ″ is equal to the frame time of the OLED display. The enabling times of the control signals SC1 ″ and SC2 ″ are also staggered from each other. Any frame time of the OLED display includes an enabling time of the control signal SC1 ″ or SC2 ″. In this embodiment, the control signals SC1 ″ and SC2 ″ are alternately enabled as an example for illustration.

[0050] The control signals SC1 ″ and SC2 ″ are also used to input the brightening device 102 respectively. The control signals SC1 ″ and SC2 ″ are, for example, a standard control signal and a brightening control signal. The standard control signal and the brightening control signal are used to respectively enable a standard driving signal and a brightening driving signal to switch the brigh...

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Abstract

The present invention provides an Organic Light Emitting Diode (OLED) display, including multiple pixel units, a brightening device and a Data Line Driver Integrated Circuit. Each pixel unit has one or more OLED respectively. The brightening device is used for receiving N driving signals and N controlling signals, and output a output signal. The Data Line Driver Integrated Circuit receives the output signal and outputs the operation signal to drive the OLED, the OLED achieves the brightening effect. N is a natural number more than 2.

Description

technical field [0001] The invention relates to an organic light emitting diode display and its brightness enhancement driving method, in particular to an organic light emitting diode display with a brightness enhancement device to increase the brightness of the organic light emitting diode display. Background technique [0002] An OLED is mainly composed of an anode, a cathode, and an organic material layer arranged between the two electrodes, and the luminous intensity of the OLED is related to the magnitude of the current flowing from the anode to the cathode of the OLED. Therefore, if you want the organic light-emitting diode to emit light with higher brightness, you need to provide a larger driving voltage to increase the current flowing through the organic light-emitting diode, and then drive more electron holes to recombine in the organic material layer to generate more Excitons make organic light-emitting diodes emit brighter light. [0003] However, if the current ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32G09G3/30G09G3/20G09G5/10H05B33/08H05B33/14H05B37/02G09F9/33G09G3/3208H05B44/00
CPCY02B20/42Y02B20/343Y02B20/30Y02B20/40
Inventor 王俊富
Owner CHI MEI EL